VK5TM


News, Updates and Other Minutiae

I have, for quite a while, provided modified versions of the code for my projects free of charge. However, the cost of webhosting for this site has tripled in the last couple of years and the little I make out of the pcbs I sell goes nowhere near covering this cost.

As of October 2017, I will be asking for a donation in exchange for providing custom modified code for my projects to help keep this site available.

As a lot of people have pics of things unrelated to ham radio on their websites, I thought I would add a couple of my own (Scroll down for site updates). Banjo, our Red Heeler/Koolie cross at 4 months old. Banjo at 4 months And at 12 months old (Feb 2016) enjoying his birthday breakfast treat of banana on toast. Banjo at 4 months A new addition to the family, an 11 week old kitten (end July 2017), rescued by Banjo after being trapped between a water tank and fence. Her name is Storm after her colouring and it's eating a bit of toast and jam (yes, our animals do eat strange things, including lemon meringue pie). They are now the best of friends. Storm at 10 weeks

October 2017

Simple DDS VFO project updated and software file uploaded. The pushbutton on the encoder is used to change step size (step sizes 10Hz, 1kHz and 10kHz).

September 2017

Noise Canceller kits now available.

July 2017

Updated both the DDS Xtal Substitute and DDS Xtal Substitute Mark 2 projects into one project. The original webpages are available to download as PDF's.

May 2017

New project added - my version of the X-Phase noise canceller. PCB available and a kit of parts to follow soon

27 December 2016

Another addition to the Gallery section. This time, fitting a DDS module to a Philips PM5326 RF Generator to cure a bad drift problem.

F1ITU Simple DDS VFO Mods

Daniel F5ITU:- "I just finished the adaptation of your software to "Simple DDS VFO" for my personal use. It works well and I will soon install it on my "DC receiver". So, now I have a VFO (10Hz step) and which performs a 600 Hz shift when it receives a transmission command on GPIO-3. In addition, I added to the printed circuit, an amp to increase the output level so I can get the necessary 7dBm the SLB-1 RX." F1ITU DDS amp schematic F1ITU DDS pcb top F1ITU DDS pcb bottom Daniel kindly sent these images of the changes to the code, along with his actual ASM file as well as his Sprint layout file for his pcb. You can find them at the end of the page. Because the following images may be a little hard to read, I have put them in a zip file you can download, also at the bottom of the page. ASM code mods ASM code mods ASM code mods ASM code mods ASM code mods ASM code mods ASM code mods ASM code mods Daniels code file. PIC12F629-08.asm And his PCB layout. See the PCB Info page for information on using this file. DDS_Dan-1.lay6 The coding images from above. F5ITU.zip